Measuring and testing – Hardness – By penetrator or indentor
Reexamination Certificate
2003-09-26
2008-11-25
Rogers, David A. (Department: 2856)
Measuring and testing
Hardness
By penetrator or indentor
C073S078000, C073S079000, C073S085000
Reexamination Certificate
active
07454960
ABSTRACT:
A hardness tester of a relatively large “cantilevering” and/or designed for permitting application of relatively large loads to the indenter may be constructed in a much slander and lighter manner by employing a loading mechanism based on the use of a second or auxiliary loading arm pivotally anchored to the frame of the tester and therefore completely independent of the stress structure of reference contained in the frame of the tester, which mechanical connects the anvil, on which the test object is placed, to the indenter. The load, applied to said second auxiliary arm is transmitted to the indenter carrying arm of the reference stress structure of the tester by unrestrained abutment of a rolling bearing solidly mounted on one of the two arms on a surface of the other arm. Along the trajectory of movement of the tip of the indenter toward the anvil.
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International Search Report No. PCT/IT03/00574, dated Aug. 4, 2004, 2 pages.
Connolly Bove & Lodge & Hutz LLP
Erik Ernst
Rogers David A.
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